I dont mean for this to sound rude or ignorant. It is a legitimate question I have.
What did the Orthodox church do before John Chrysostym?? What liturgy did they use? I know the Church is known for being unchanged, but at some point didnt they have to stop, or 'change' what they were doing in order to start using the liturgy of John Chrysostom??
It is based off of the liturgy of St. James. The Liturgy of St. John Chrysostom is very similar to the liturgy of St. Basil. The only major difference being a modified anaphora. Even today many different anaphoras exist in certain rites.
The Byzantine rite (Byzantine liturgy of St. James, Basil and Chrysostom) is Antiochene. If my understanding is correct, the Syriac liturgy is actually a translation into Syriac from the Greek, the original Syriac liturgy being absorbed long ago. Thus both Byzantine and Syriac are Antiochene rites.